API5L X65 PSL2 + PWHT 2

[gabstag]

I am buying API 5L X65 PSL2 plates 39mm thk. We asked for normalized plates but the mill says that this cannot be possible becouse the plates sour resistance will be lost with the normalizing temperature (about 600°C).
They propose TMCP plates without possibility of PWHT.

I need the plates for welded pipes according B31.3 and I need to perform two PWHT's at 593-605°C (one during the pipe fabrication and one during the site erection.

How do you think I have to procede?

Thank you for your co-operation

 

[metengr]

gabstag;
I would qualify this PWHT and have HIC testing, which you can do via weld coupons. I would still have concerns related to HIC resistance of the proposed PWHT for this high strength material.

 

[stanweld]

Agree totally with metengr.

 

[gabstag]

THe HIC resistance test criteria shall be CLR max 15%, CTR max. 5% and CSR max. 1.5%